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Exception Handling: Difference between revisions

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Tungocman (talk | contribs)
Tungocman (talk | contribs)
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=== throw expression ===
=== throw expression ===
  throw [value]
  throw [expression]


* The '''value''' can be any types (E.g. Number type, Array type, String type...)  
* The '''expression''' can be any types (E.g. Number type, Array type, String type...)  
* If throw is used without the '''value''', it will be re-throw.
* If throw is used without the '''expression''', it will be re-throw.


== <span style="color:#a52a2a;">'''Examples'''</span>  ==
== <span style="color:#a52a2a;">'''Examples'''</span>  ==

Revision as of 11:09, 19 December 2011

Exception Handling (Error Runtime Handling)


An exception is an error occurs in the runtime (the excution) of program. The CGScript language uses the try/catch statement and the throw expression to implement the exception handling.

Syntax

try-catch statement

try {
   // codes that could throw an exception
}
catch (exception) {
   // codes that execute when exception-declaration is thrown in the try block
}
[catch (exception) {
   // code that handles another exception type
} ] . . . ]
  • The Parameter exeption can be any types (E.g. Number type, Array type, String type...)

throw expression

throw [expression]
  • The expression can be any types (E.g. Number type, Array type, String type...)
  • If throw is used without the expression, it will be re-throw.

Examples